Rockwood 2604ws ultra lite

[khbk1948]

I tow my Rockwood 2604ws with a 2016 f-150 w the Twin turbo eco boost. I have the heavy tow pkg and 3.55 rear end. I also have an equalizer anti sway system which works great. I get about 6-7 mpg loaded at 65-70 mph and 7-8 mpg at 60 mph . Is this pretty normal? If not is there any thing else that I can do to improve mpg?

[Martsing]

I have almost the exact same set-up but with the 2703WS and I get a bit better than that but not dramatic. I stay close to 10mpg on a flat road at 65. One thing I have found is that the tow haul doesn't shift as fast as I would like. It tends to stay in a higher gear longer than I would like when coming into a hill. I use the manual shift pretty often. Believe it or not, I noticed the biggest hit to mileage when I went from load range C regular passenger tires to BFG K02 light truck tires. It impacted mileage by 2 or 3mpg. The bottomline though is if you are worried about mileage this isn't your hobby!!

Marty

[khbk1948]

That’s true. Thanks for the post. I’ll try the manual shift on my next trip. That’s exactly what happens on my rig in auto tow haul mode, uses 4th and 5th a lot. I do have better tires . Good year Endurance trailer tires. Probably checking the air in them more often may help too.

[Martsing]

It's funny that you mention the Endurance tires. I just put them on not long ago and have had them for one trip. I may have noticed a little better mileage but I have only had one trip and it was in the Appalachians so I think more trips are in order before I say for sure!

Marty

[LarrysPony]

I have the same year 150 with ecoboost. I have 3.73 axle with hd trailer tow. I get 8-9. I don't use tow haul because I dont like the way it downshifts. I use manual when I get in some substantial hills. I am headed to the western national park in a couple weeks so out should be interesting.

[rarobo]

Originally Posted by LarrysPony

I have the same year 150 with ecoboost. I have 3.73 axle with hd trailer tow. I get 8-9. I don't use tow haul because I dont like the way it downshifts. I use manual when I get in some substantial hills. I am headed to the western national park in a couple weeks so out should be interesting.

We have a 17 f150 with the 5.0 and flagstaff 25bh(2504) our first trip was 1500 miles @ 7-8 mpg. On our 2nd trip 1100 miles, I used premium gas $$$$ and I installed a bed cover, we got a little over 10mpg. They were 2 different routes but everything seemed to be a lot smoother, the truck didn’t seem to working as hard, stayed in 5th more with no 3rd gear.....3.55 rear....just my observation nothing scientific

[RACarvalho]

Just to add another data point:
Truck and trailer as per signature below.
Rear end is 3.73, 10 spd transmission and the trailer is heavy (~7500lbs empty).
I get 8.2 mpg average when manually locking out the 8th, 9th and 10th gears (overdrives) in tow mode and 7.4mpg if I let the transmission run all gears - always using regular gas.

Towing my previous 23IKSS (5400lbs dry) with the same truck I would get 10mpg locking the overdrives out....